AutoCodes – Chevrolet – U184D 2018 Chevrolet Silverado

U184D 2018 Chevrolet Silverado Code - Lost Communication with Radio on Low Speed CAN Bus

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Common causes include Faulty Radio, Radio harness is open or shorted, Radio circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U184D 2018 Chevrolet Silverado indicates Lost Communication with Radio on Low Speed CAN Bus.
Common causes
Common causes include Faulty Radio, Radio harness is open or shorted, Radio circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 194
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 24, 2023
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Code U184D 2018 Chevrolet Silverado Description

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Codes (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of health message, detect its absence; those devices in turn set a DTC associated with the loss of state of health of the non-communicating device. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC.
OBDII Code U184D 2018 Chevrolet Silverado - Lost Communication with Radio on Low Speed CAN Bus - AutoCodes.com
U184D 2018 Chevrolet Silverado Code - Lost Communication with Radio on Low Speed CAN Bus

What are the Possible Causes of the DTC U184D 2018 Chevrolet Silverado?

  • Faulty Radio
  • Radio harness is open or shorted
  • Radio circuit poor electrical connection

How to Fix the DTC U184D 2018 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U184D 2018 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U184D 2018 Chevrolet Silverado code?

Need more information on how to fix the U184D 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U184D 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U184D 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U184D in a 2018 Chevrolet Silverado?

- Common symptoms include the radio not working, loss of communication with other vehicle modules, and warning lights on the dashboard.

2. What does the OBDII code U184D "Lost Communication with Radio on Low Speed CAN Bus" mean for a 2018 Chevrolet Silverado?

- This code indicates a communication issue between the vehicle's radio and other modules on the low-speed Controller Area Network (CAN) bus.

3. What are some possible causes of OBDII code U184D in a 2018 Chevrolet Silverado?

- Potential causes include a faulty radio module, wiring issues, loose connections, a defective CAN bus, or a malfunctioning powertrain control module (PCM).

4. How can I diagnose the reason behind OBDII code U184D in my 2018 Chevrolet Silverado?

- Diagnosing this code typically involves checking for loose connections, inspecting wiring for damage, testing the radio module, and using a scan tool to communicate with the affected modules.

5. Can I repair OBDII code U184D in my 2018 Chevrolet Silverado myself?

- Depending on the cause, you may be able to repair this code yourself by addressing loose connections, replacing a faulty radio module, or repairing damaged wiring. However, more complex issues may require professional diagnosis and repair.

6. Is it safe to continue driving my 2018 Chevrolet Silverado with OBDII code U184D present?

- It is generally not recommended to drive the vehicle with this code present, as it may lead to further communication issues with critical vehicle systems.

7. How much does it cost to repair OBDII code U184D in a 2018 Chevrolet Silverado?

- Repair costs can vary depending on the cause of the issue. Simple fixes like reconnecting loose wires may be inexpensive, while replacing a faulty module or addressing wiring damage could be more costly.

8. Can resetting the OBDII code U184D in my 2018 Chevrolet Silverado make it go away permanently?

- Resetting the code may temporarily clear the warning, but if the underlying issue is not addressed, the code is likely to return once the system detects the problem again.

9. Will disconnecting the battery reset the OBDII code U184D in a 2018 Chevrolet Silverado?

- Disconnecting the battery may reset the code temporarily, but it is important to diagnose and repair the root cause to prevent the code from reappearing.

10. How can I prevent OBDII code U184D from occurring in my 2018 Chevrolet Silverado in the future?

- Regularly inspecting and maintaining the vehicle's electrical connections, wiring, and modules can help prevent communication issues like U184D.

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